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Transmission Problems

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Old Jun 28, 2022 | 10:10 AM
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Transmission Problems
Having a lot of hestiation when coming to a stop and going through 1st and 2nd gears, blinking O/D light, etc. Everything seems fine once I'm at 20mph or so. Scanned with Forscan and the codes it gives are P0503, P0720, P0722. I've changed out the input and output sensors in the transmission as well as completely replaced the wiring harness (from the engine bay all the way back to the rear output sensor). Anyone have an idea on what to check/change out next?
 
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Old Jun 28, 2022 | 10:45 AM
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...it would help tremendously to know what transmission and/or year model and power plant you have as the transmissions are different...
 
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Old Jun 28, 2022 | 10:53 AM
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My bad thought it was in my signature

2001 F250 5.4 2WD
 
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Old Jun 28, 2022 | 11:56 AM
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Well...According to the guy in this video, it's your alternator causing the problems....Watch the video make up your own mind.

 
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Old Jun 28, 2022 | 05:19 PM
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That is not what I would have suspected, thanks! I’ll give this a look.
 
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Old Jul 1, 2022 | 07:51 PM
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Thanks Mike!! I picked up a new alternator and installed it today and everything is working fine again.
 
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Old Jul 1, 2022 | 08:03 PM
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Double post
 
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Old Jul 1, 2022 | 08:18 PM
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Glad it worked out for you.
 
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